Used as quasi-adv.: roga duit . . . a n-imtheclamad no a
n-imscothad nechtar de (= you shall have your choice either
of gathering or of cutting them),
TBC 1407.
láech aile for
áth dō-som nō nechtar de longphort do gabail d'ḟeraib hErend
(to send) another warrior to the ford to (fight) him or alternatively
. . .,
1785
.

Nechtar de comes to be looked on as a single word and is
somet. folld. by a part. gen. or DE, as in follg. exx. from Laws
Comm.: ac nechtar de in da nannad [leg. in da n-imad] either
of the two parties,
Laws ii 318.18
; similarly
358.15
,
366.14
(where
for: in da naimad, read: in da n-imad). do n.¤ de don lanamain
for either of the married couple,
ii 360.24
. ma ta n.¤ de dib aice
if he has either of them,
332.3
, cf.
406.27
,
iii 210.14
.